Finding the Third Proportional to 16,659 and 20,223

Step by Step Solution

1. Step 1: Write the proportion equation
   16,659 : 20,223 = 20,223 : x
2. Step 2: Convert to fraction form
   16,659/20,223 = 20,223/x
3. Step 3: Cross multiply
   16,659x = 20,223 × 20,223
4. Step 4: Simplify right side
   16,659x = 408,969,729
5. Step 5: Solve for x
   x = 408,969,729/16,659
6. Step 6: Final answer
   x = 24,549.48